document.write( "Question 888639: the sum of two numbers is 12.if one number is subtracted from twice the other, their difference i 9. find the numbers. \n" ); document.write( "
Algebra.Com's Answer #537537 by Okamiden(22)\"\" \"About 
You can put this solution on YOUR website!
Let's name the numbers x and y.
\n" ); document.write( ".
\n" ); document.write( "x + y = 12, the sum of the two numbers
\n" ); document.write( ".
\n" ); document.write( "x-2y = 9, where one number is substracted twice from the other.
\n" ); document.write( ".
\n" ); document.write( "Now, we just use one of the rules for solving two equations with two variables.
\n" ); document.write( "I suggest this method:\r
\n" ); document.write( "\n" ); document.write( "x + y = 12 -> x = 12-y
\n" ); document.write( ".
\n" ); document.write( "x - 2y = 9 -> 12 - y - 2y = 9
\n" ); document.write( ".
\n" ); document.write( "12 - 3y = 9
\n" ); document.write( ".
\n" ); document.write( "-3y = -3
\n" ); document.write( ".
\n" ); document.write( "y = 1
\n" ); document.write( ".
\n" ); document.write( "x = 12-y = 11
\n" ); document.write( ".
\n" ); document.write( "Answer, 11 and 1! You can verify yourself. :)\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );